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Question: 6

Why does mars appear in red?

There are stormy winds with a speed of 270 km. per hour that blow for months together. They create a dusty layer making the planet appear red.

Question: 7

How the planets are classified?

The planets can be classified into rocky planets and gaseous planets based on their composition.

Question: 8

Why is the earth known as living planets?

The land, water, air and the favourable climate facilitate the origin of life and help them in their development on the earth. Thus the earth is known as living planet.

Question: 9

What are satellites?

Some of the planets have smaller bodies going around them. They are called satellites.

Question: 10

Name the planets which have no satellite?

Mercury, Venus and Pluto have no satellite.

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